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A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line.
Elements of Geometry: Containing the Principal Propositions in the First Six ... - Página 247
por Euclid - 1789 - 272 páginas
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## The Elements of Euclid, the parts read in the University of Cambridge [book ...

Euclides - 1846
...but are not in the same direction. ix. A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line. NB, When several angles are at one point B, any one of them is expressed by three...
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## The First Book of Euclid's Elements, Simplified, Explained, and Illustrated ...

Euclides - 1847
...the other an internal inclination. 9. A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line. NB — When several angles meet at a A point, each of them is indicated by three...
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## The definitions, postulates, axioms, and enunciations of the propositions of ...

Euclides - 1848
...but not in the same straight line. IX. A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line. X. When a straight line standing on another straight line, makes the adjacent angles...
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## Lessons on the delineation of form

Charles Richson - 1848
...ifieans of two long pencils or pen-holders. DEFINITION. — "An angle* is the inclination of two straight lines to one another, which meet together, but are not in the same straight line." 16 EXAMPLE II. OBSERVE — 1. The number of lines drawn to the point of the angle...
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## The first three books of Euclid's Elements of geometry, with theorems and ...

Euclid, Thomas Tate - 1849 - 108 páginas
...but are not in the same direction." IX. A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line. NB "When several angles are at one point B, anyone of them is expressed by three...
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## A Manual of Surveying for India, Detailing the Mode of Operations on the ...

Ralph Smyth, Sir Henry Edward Landor Thuillier - 1851 - 718 páginas
...them lies wholly in that superficies. A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line.* When a straight line standing upon another straight line makes the adjacent angles...
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## The First Two Books of the Elements of Euclid ... with Additional Figures ...

Euclides - 1852
...plane angle, not rectilineal.] Fig. 1. A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line. IX. NB " When several angles are at one point B, any one of them is expressed by...
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## Manual of astronomy

John Drew - 1853 - 331 páginas
...SJ Hersehel. PAKT III. PRACTICAL ASTRONOMY. DEFINITIONS. 205. 1. AN ANGLE is the inclination of two lines to one another, which meet together, but are not in the same direction. Since the principal part of Practical Astronomy consists in the right measurement of...
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## The synoptical Euclid; being the first four books of Euclid's Elements of ...

Euclides - 1853
...but are not in the same direction." IX. A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line. NB "When several angles are at one point B, any one of them is expressed by three...
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## The first six books of the Elements of Euclid, with numerous exercises

Euclides - 1853 - 147 páginas
...but are not in the same direction. IX. A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line. * NB — When several angles are at one point b, any one of them is expressed by...
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